Nut-wrench.



No. 695,047. Patented Mar. II, 1902.-

W. F. HAMILTON.

N U T W B E N B H (Application filed June 17, 1901.

(No Model.)

llllll/lI/rl! v //VL/E/\/7UP FY H/S" HTT'DFP/VSYS llNiTnn TaTns PATENT :(irmcn.

WILLIAM F. HAMILTON, OF VENTURA, CALIFORNIA.

NUT-"WRENCH.

SPECIFICATION forming part of Letters Patent No. 695,047, dated March 1 1, 1902. Application filed June 17, 1901. Serial No. 64,939. (No model.)

To (cl Z whom it 72mg] concern:

Be it known that I, WILLIAM F. HAMILTON, a citizen of the United States, residing at Ventura, in the county of Ventura, State of California, have invented new and useful Improvements in Nut-Wrenches, of which the following is a specification.

My invention relates to wrenches designed, primarily, for use in putting on and taking 03 nuts on the teeth of the cylinders of threshin g-machines and the object thereof is to provide a wrench by means of which a nut may be removed from orset upon a cylinder-tooth with as much ease and speed as if the nut were on the outside of the cylinder. '1 accomplish this object by the wrench described herein and illustrated in the accompanying drawings, in which- Figure 1 is an end view of a fragment of a cylinder with my wrench in place to remove the nut from a tooth on the cylinder. Fig. 2 is an end View of the same looking in the direction of the arrow in Fig. 1, the shaft and portions of the spider-arms being removed for clearness of illustration. Fig. 3 is aplan view of the interior of the head of the wrench, the top casing and handle being removed for clearness of illustration.

In thresl1ing-machine cylinders there are a certain number of teeth thereof whose shank passes through the bars and hoops and rim of the spider of the cylinder and terminate between the spokes or arms of the spider, and

-thenuts which hold such teeth in the cylinder are very difficult to get at owing to such location, the space around them being contracted. There are many wrenches which may be used to remove most of the nuts from the teeth of the cylinder; but so far as I am aware there has not prior to the invention of my wrench been produced a wrench which will remove equally well the nuts which are in these positions which are difficult to get at and those that are easy of access. With my improved wrench, owing to its peculiar form of construction, I am able to remove the nuts of difficult access equally well with those of easy access.

In the drawings, A is the cylinder-shaft, on which is mounted spider B,having arms C and rims D. Affixed to the spider-rim are the longitudinal cylinder-bars E, in which teeth F are mounted. These bars are surrounded at each end by a ring or hoop G, which is usually shrunk on to more tightly bind the bars to the spider. There is usually one or more hoops intermediate the ends and a like number of spiders on the shaft. As will be seen by Fig. 1, the shank of tooth F passes throughthe hoop, the bar, and the rim ofthe spider and terminates between the arms of the spider, where it is held in place by nut H. The wrench-socket which fits these nuts is a gear J with a central aperture therethrough to fit upon the nut, which is usually square. This gear is also provided with circular side bearings J, which fit into corresponding holes in the casing K of the wrench-head.

L is an intermediate gear rotatively mounted in the casing by circular side bearings or a shaft L, which gear meshes with the socketgear and with the handle-gear M, which is also mounted in the casing by circular side bearings M. This gear is provided with a central aperture,preferably square,for the reception of the T-shaped operating-handleN, which for lightness is preferably made of gaspipe. The end is preferably made square and is held in the socket-gear bya pin 0. The up per and lower parts of the casing are fastened together by rivet P. The intermediate gear is provided to impart motion from the handlegear to the socket-gear and to enable them to be placed a little distance apart, as shown in Fig. 8, so that the casing on one side can be cut away to form a V-shaped indentation or opening therein, as shown at B. This indentation is of vital importance to the opera tion of the wrench on the nuts which are difficultto get at, as it provides means to clear the spider-arms when the wrench-head is passed between the longitudinal bars and the socket is passed over the nut between the spider-arms.

I am aware that a Wrench having a nut-operating gear and a handle operating gear meshing therewith is in use; but this Wrench will not operate on the nuts between the spider-arms, as the gears cannot be made of a size to pass between the arms of the spider, intermesh with each other, and have the han dle project between the longitudinal bars of the cylinder.

1 am also aware that a wrench has been patented which has an intermediate gear between the socket-operating gear and the handle-operated gear; but these gear are arranged in a straight line, and the casing will not provide clearance for the spider-arms when the socket is placed on a nut between such arms and at the same time permit the handle to pass between the longitudinal bars of the cylinder. It is important that the gears of my wrench be set at the apices of a triangle, with the intermediate gear opposite the indentation in the casing, because the nutoperating gear must be small enough to pass between the spider-arms C of the cylinder and back under the-rim D and upon the nut H, as shown in Fig. 2. This peculiar position limits the size of the nut-operating gear. It is necessary that the handle of the gear M shall pass out between the bars E of the cylinder, which limits the size of this gear, so that an intermediate gear is required to impart motion from the handle-gear to the nutgear, and that this intermediate gear shall be mounted in the casing on one side of the line which passes through the centers of the other gears, making the points of the centers of the three gears occupy the apices of a triangle. In this feature consists the difference between my wrench and other wrenches, and I do not therefore claim, broadly, a wrench having a handle-operated gear, an intermediate gear, and a socket-gear; but

What I do claim, and desire to secure by Letters Patent, is

1. The herein-described wrench, comprising a gear having a central socket therein for the reception of a nut on a tooth of a threshin g-cylinder, rotatively mounted in a wrenchhead casing a handle-gear rotatively mounted in said casing; an intermediate gear also rotatively mounted in said casing at one side of the line which joins the centers of the nut and handle gears and meshing with both the other gears, a casing for said gear having an indentation in one of the sides thereof between the socket-gear and the handle-gear, opposite the intermediate gear, in combination with a handle adapted to operate the handle-gear.

2. In a wrench, the combination of a casing having an indentation in one side thereof; a handle gear, and socket gear rotatively mounted in said casing, one on each side of said indentation; an intermediate gear,meshing with both of the other gears, rotatively mounted in said casing opposite the indentation at a point which is at one side of the line which passes through the centers of the other gears; and a handle secured to the handle-gear.

3. In a cylinder-wrench three gears rota-- tively mounted in the casing of the head thereof at the apices of a triangle, one of said gears having a socket adapted for the reception of the nut of a threshing-cylinder tooth, one of said gearsadapted for the reception of an operating-handle, and one of said gears adapted to mesh with both of the other gears and impart motion from one to the other; a casing having an indentation in the side thereof 0pposite the intermediate gear; and a handle secured to the handle-gear.

In witness that I claim the foregoing I have hereunto subscribed my name this 7th day of June, 1901.

VILLIAM F. HAMILTON.

Witnesses:

W. M. COOK, A. J. BELL. 

